| .. | .. |
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| 2069 | 2069 | struct raid5_percpu *percpu; |
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| 2070 | 2070 | unsigned long cpu; |
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| 2071 | 2071 | |
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| 2072 | | - cpu = get_cpu(); |
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| 2072 | + cpu = get_cpu_light(); |
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| 2073 | 2073 | percpu = per_cpu_ptr(conf->percpu, cpu); |
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| 2074 | + spin_lock(&percpu->lock); |
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| 2074 | 2075 | if (test_bit(STRIPE_OP_BIOFILL, &ops_request)) { |
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| 2075 | 2076 | ops_run_biofill(sh); |
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| 2076 | 2077 | overlap_clear++; |
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| .. | .. |
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| 2129 | 2130 | if (test_and_clear_bit(R5_Overlap, &dev->flags)) |
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| 2130 | 2131 | wake_up(&sh->raid_conf->wait_for_overlap); |
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| 2131 | 2132 | } |
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| 2132 | | - put_cpu(); |
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| 2133 | + spin_unlock(&percpu->lock); |
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| 2134 | + put_cpu_light(); |
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| 2133 | 2135 | } |
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| 2134 | 2136 | |
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| 2135 | 2137 | static void free_stripe(struct kmem_cache *sc, struct stripe_head *sh) |
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| .. | .. |
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| 6816 | 6818 | __func__, cpu); |
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| 6817 | 6819 | return -ENOMEM; |
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| 6818 | 6820 | } |
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| 6821 | + spin_lock_init(&per_cpu_ptr(conf->percpu, cpu)->lock); |
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| 6819 | 6822 | return 0; |
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| 6820 | 6823 | } |
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| 6821 | 6824 | |
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| .. | .. |
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| 6826 | 6829 | conf->percpu = alloc_percpu(struct raid5_percpu); |
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| 6827 | 6830 | if (!conf->percpu) |
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| 6828 | 6831 | return -ENOMEM; |
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| 6829 | | - |
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| 6830 | 6832 | err = cpuhp_state_add_instance(CPUHP_MD_RAID5_PREPARE, &conf->node); |
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| 6831 | 6833 | if (!err) { |
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| 6832 | 6834 | conf->scribble_disks = max(conf->raid_disks, |
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